CI

At a glance

ClinicalIndex Comparison Record
N/ACompleted· 48 enrolled
Drug / intervention
high-intensity neck strengthening +1 moreother
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT03883165
NCT03883165N/ACompleted

How do the Neck Muscles Influence Head Acceleration During Sport-associated Impact Events in High School Athletes?

University of Michigan·interventional·Posted Mar 20, 2019·Updated Jun 24, 2025

In Brief

A clinical study evaluating high-intensity neck strengthening and Control group for Sport-related Concussion and 2 related conditions. Completed, enrolled 48 participants across 1 site.

Detailed Summary

Sport-related concussion is a common and serious injury that can affect athletes of all ages in any sport. The purpose of this project is to study the effect of a 12-week manual resistance neck strengthening exercise program on participants' neck size and strength and how their heads and necks move during simulated sport-associated tasks. This study will help determine if greater neck strength may lower an athlete's risk of sport-related concussion. Each healthy male and female soccer athlete between the ages of 13-19 enrolled in the study will participate for approximately four months. Study participation includes routine visits with various assessments (i.e. certain body measurements, magnetic resonance imaging, ultrasound) in addition to the strengthening exercise program.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesUnited States

Timeline

N/ACompletedFinished
2020202120222023202420252026
First PostedMar 20, 2019
Enrollment StartJan 22, 2021
Primary CompletionJun 8, 2024
Study CompletionJun 10, 2024
TodayJul 2, 2026
Enrollment to primary: 3.4 yearsPosted 7.3 years ago

Interventions

high-intensity neck strengtheningother

All subjects will exercise 2 days per week for 12 weeks under the direct supervision of a study-assigned strength coach with a minimum of 1 day of rest between exercise sessions. Participants will perform a standardized set of general resistance exercises targeting the chest, shoulders, back, upper and lower extremities, and core. Additionally, they will also perform a higher number of repetitions of manual resistance neck strengthening exercises in sagittal plane flexion and extension, coronal plane lateral flexion in both directions, and axial plane rotation in both directions,as well as dumbbell shoulder shrugs.

Control groupother

All subjects will exercise 2 days per week for 12 weeks under the direct supervision of a study-assigned strength coach with a minimum of 1 day of rest between exercise sessions. Participants will perform a standardized set of general resistance exercises targeting only the chest, shoulders, back, upper and lower extremities, and core, without resistance exercises specifically targeting the neck.